Update all skeleton components to properly support dark mode with appropriate color variants for backgrounds, borders, and gradients.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Loading State Improvements:
- Add SkeletonLoader component with pattern info, canvas, and connection skeletons
- Show loading spinner on file selection and during pattern upload
- Display upload progress with enhanced progress bar and percentage
- Add success confirmation message when upload completes
- Show thread color preview dots inline with pattern info (up to 5 colors)
Visual Polish & Animations:
- Add custom animations: fadeIn, slideInRight, pulseGlow, skeleton-loading
- Enhance all cards with subtle hover shadow effects
- Improve header with richer gradient (blue-600 → blue-700 → blue-800)
- Polish error messages with icons and improved layouts
- Enhance empty state with decorative patterns and feature highlights
- Add smooth transitions to all NextStepGuide states
- Current color block pulses with blue glow animation
- Color blocks have hover states for better interactivity
Pattern Upload & Lock Functionality:
- Hide upload button after pattern is uploaded (patternUploaded && uploadProgress === 100)
- Disable pattern dragging when uploaded with visual lock indicator
- Pattern position overlay shows amber background with lock icon when locked
- Pattern remains in canvas after deletion for re-editing and re-upload
- Delete pattern from cache when deleting from machine to prevent auto-resume
- Add LockClosedIcon to indicate locked pattern state
Pattern Management:
- Keep pattern data in UI after deletion for repositioning and re-uploading
- Clear machine-related state but preserve pattern visualization
- Reset upload progress and pattern uploaded state on deletion
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
